[@robin-w Moderator 12 years, 7 months ago]

try typing your url followed by wp-login.php into the address bar

eg

http://www.mysite.com/wp-login.php

and then login and then logout

Then try the widget again

I have had similar issues on occasions, and to me it seems like wp-login gets itself confused as to whether you’re logged in or not. This seems to reset it.

Come back if that doesn’t work